CTRL-Left clicking an idle Mex Category (idle T1 or idle T2) in Econtrol does nothing for me. Nothing is selected, all stuff is deselected. (But CTRL-right-click, and CTRL-left clicking other categories work flawlessly.) (I still use v13)

Left-clicking on a red, empty checkbox also does not select the paused units.

Also, some Mex dont get registered into the system, as if they would not exist at all. (wrong total number, unselectable with econtrol, irresponsive in econtrol to manually upgrading or pausing)